如何使用PHP重新格式化数组？

Question

我有以下数组：

Array
(
    [0] => Array
        (
            [Import] => Array
                (
                    [id] => 1
                    [category_id] => 2
                    [product_id] => 2
                    [amount] => 50
                    [cost] => 8320
                    [comment] => transportation and others cost: 100  
                    [created] => 2015-06-23 19:21:10
                )

            [0] => Array
                (
                    [total_sell] => 10
                    [no_contact] => 1
                    [confirmed] => 2
                    [canceled] => 0
                )

        )

    [1] => Array
        (
            [Import] => Array
                (
                    [id] => 2
                    [category_id] => 2
                    [product_id] => 2
                    [amount] => 15
                    [cost] => 3000
                    [comment] => 
                    [created] => 2015-06-22 18:10:36
                )

            [0] => Array
                (
                    [total_sell] => 10
                    [no_contact] => 1
                    [confirmed] => 2
                    [canceled] => 0
                )

        )

    [2] => Array
        (
            [Import] => Array
                (
                    [id] => 3
                    [category_id] => 2
                    [product_id] => 1
                    [amount] => 15
                    [cost] => 2000
                    [comment] => 
                    [created] => 2015-06-23 19:20:15
                )

            [0] => Array
                (
                    [total_sell] => 10
                    [no_contact] => 0
                    [confirmed] => 0
                    [canceled] => 0
                )

        )

) 

我想在[Import] [product_id]中删除相同product_id的重复值，但要求sum [Import] [amount]。我期望的数组是：

Array
(
    [0] => Array
        (
            [Import] => Array
                (
                    [id] => 1
                    [category_id] => 2
                    [product_id] => 2
                    [amount] => 65
                    [cost] => 8320
                    [comment] => transportation and others cost: 100  
                    [created] => 2015-06-23 19:21:10
                )

            [0] => Array
                (
                    [total_sell] => 10
                    [no_contact] => 1
                    [confirmed] => 2
                    [canceled] => 0
                )

        )


    [1] => Array
        (
            [Import] => Array
                (
                    [id] => 3
                    [category_id] => 2
                    [product_id] => 1
                    [amount] => 15
                    [cost] => 2000
                    [comment] => 
                    [created] => 2015-06-23 19:20:15
                )

            [0] => Array
                (
                    [total_sell] => 10
                    [no_contact] => 0
                    [confirmed] => 0
                    [canceled] => 0
                )

        )

)

如果有人提供解决此问题的功能，这将是一个真正的礼物。

Answer 1

$filteredArray = [];

foreach ($array as $productData) {
    if (isset($filteredArray[$productData['Import']['product_id']])) {
        $filteredArray[$productData['Import']['product_id']]['Import']['amount'] += $productData['Import']['amount'];
    }
    else {
        $filteredArray[$productData['Import']['product_id']] = $productData;
    }
}

print_r($filteredArray);

啊..忘了提 - - $array是你的基础数组。

Answer 2

/**
 * Removes duplicate summing amount from products array
 * 
 * @param array $array
 * @return array
 */
function removeDuplicates($array)
{
    $idsCount = array();
    foreach ($array as $key => $value) {
        $idsCount[$value['Import']['product_id']]['count'] += 1;
        $idsCount[$value['Import']['product_id']]['sum'] += $value['Import']['amount'];
        if ($idsCount[$value['Import']['product_id']]['count'] > 1) {
            unset($array[$key]);
            $array[$idsCount[$value['Import']['product_id']]['key']]['Import']['amount'] = $idsCount[$value['Import']['product_id']]['sum'];
        } else {
            $idsCount[$value['Import']['product_id']]['key'] = $key;
        }
    }
    return $array;
}

我知道它看起来很疯狂，但是在您的特定阵列上格式化。